Jan 19, 2026
Average erect penis girth
The best clinical synthesis places average erect penis circumference (girth) around 11.5–12.3 cm (about 4.5–4.8 inches), with the frequently cited pooled estimate of 11.66 cm (4.59 in) coming from a 2...
Average penis measurements
Average adult male penis measurements across multiple systematic reviews and large studies
Fact-Checks
3 resultsJan 16, 2026
How accurate are self-reported penis size surveys compared to clinical measurements?
Self-reported penis size surveys are systematically less reliable than clinician-measured data: most studies find self-reports skew larger, driven by social desirability, measurement differences and s...
Jan 13, 2026
How do measurement methods (self-measurement vs clinician measurement) change reported average penis lengths?
Studies in which clinicians measure penises—using standardized bone‑pressed or investigator‑measured techniques—find an average erect length around 13.1 cm (≈5.16 in), while self‑reported surveys rout...